使用 spring boot 配置 JPA 不起作用 [英] Configuration JPA with spring boot is not working
本文介绍了使用 spring boot 配置 JPA 不起作用的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
起初，我得到这个错误
Caused by: java.lang.IllegalStateException: ApplicationEventMulticaster not initialized - call 'refresh' before multicasting events via the context: org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@78bd863d: startup date [Thu Sep 17 14:11:50 KST 2015]; root of context hierarchy
at org.springframework.context.support.AbstractApplicationContext.getApplicationEventMulticaster(AbstractApplicationContext.java:344)
at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:331)
at org.springframework.boot.autoconfigure.orm.jpa.DataSourceInitializedPublisher.postProcessAfterInitialization(DataSourceInitializedPublisher.java:69)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsAfterInitialization(AbstractAutowireCapableBeanFactory.java:422)
at org.springframework.beans.factory.support.AbstractAutowireCapab
我在 此处 中找到了解决方法，并添加了导致上述错误的 exclude 属性.
And I found the workaround in here and added the exclude property that caused the error above.
@SpringBootApplication
@ImportResource( {"classpath:/config/*.xml" } )
@EnableAutoConfiguration(exclude=org.springframework.boot.autoconfigure.orm.jpa.HibernateJpaAutoConfiguration.class)
@ComponentScan
@Configuration
public class Starter extends SpringBootServletInitializer {
@Override
protected SpringApplicationBuilder configure(SpringApplicationBuilder application) {
return application.sources(Starter.class);
}
public static void main(String[] args) {
SpringApplication.run(Starter.class, args);
}
但我又遇到了其他错误.
But I got other error again.
Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [javax.persistence.EntityManagerFactory] is defined
at org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor.findDefaultEntityManagerFactory(PersistenceAnnotationBeanPostProcessor.java:575)
at org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor.findEntityManagerFactory(PersistenceAnnotationBeanPostProcessor.java:531)
at org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor$PersistenceElement.resolveEntityManager(PersistenceAnnotationBeanPostProcessor.java:697)
at org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor$PersistenceElement.getResourceToInject(PersistenceAnnotationBeanPostProcessor.java:670)
<小时>
更新 1
在我添加了 messgesource bean 之后，这个错误开始了.
This error have started after i add the messgesource bean.
<bean id="messageSource" class="com.xxx.redca.hub.common.context.support.DatabaseDrivenMessageSource">
<constructor-arg index="0" ref="com.xxx.redca.hub.admin.module.messagemgn.service.MessageService" />
<constructor-arg index="1" ref="com.xxx.redca.hub.admin.language.service.LanguageMgnService" />
<constructor-arg index="2" value="#{comProps['defaultLang']}" />
</bean>
public class DatabaseDrivenMessageSource extends AbstractMessageSource implements ResourceLoaderAware{
private Logger logger = LoggerFactory.getLogger(this.getClass());
private ResourceLoader resourceLoader;
private final Map<String, Map<String, String>> properties = new HashMap<String, Map<String, String>>();
private String defaultLang;
private MessageService messageService;
private LanguageMgnService languageMgnService;
<小时>
更新2
我使用了两种 orm，jpa 和 mybatis.
I am using two kinds of orm both jpa and mybatis.
orm 由 spring-data-jpa 设置，mybatis 由 spring xml 设置.
Orm is set by spring-data-jpa and mybatis is set by spring xml.
application.properties
spring.datasource.url=jdbc:mysql://70.121.224.51:3306/faro
spring.datasource.username=root
#spring.datasource.password=
spring.datasource.driverClassName=com.mysql.jdbc.Driver
spring.datasource.data=classpath:/init.dml/TB_FR_LANGUAGE_INFO_INITDATA.sql,classpath:/init.dml/TB_FR_MESSAGE_INFO_INITDATA.sql
spring.jpa.hibernate.naming-strategy = org.hibernate.cfg.ImprovedNamingStrategy
spring.jpa.properties.hibernate.dialect = org.hibernate.dialect.MySQL5Dialect
spring.jpa.database-platform= org.hibernate.dialect.MySQL5Dialect
spring.jpa.show-sql = true
spring.jpa.hibernate.ddl-auto = create
spring.view.prefix=/WEB-INF/pages/
spring.view.suffix=.jsp
XML 配置
文件太多了.但我附加了似乎相关的文件.
There are so many files. But I attached files that seemed to be related.
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:jdbc="http://www.springframework.org/schema/jdbc"
xmlns:util="http://www.springframework.org/schema/util"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/jdbc
http://www.springframework.org/schema/jdbc/spring-jdbc.xsd
http://www.springframework.org/schema/util
http://www.springframework.org/schema/util/spring-util-4.0.xsd">
<util:properties id="props" location="classpath:/properties/mysql.datasource.properties" />
<bean id="dataSource" class="com.jolbox.bonecp.BoneCPDataSource" destroy-method="close">
<property name="driverClass" value="com.mysql.jdbc.Driver" />
<property name="jdbcUrl" value="jdbc:mysql://70.121.224.51:3306/faro" />
<property name="username" value="root" />
<property name="password" value="" />
<property name="logStatementsEnabled" value="true" />
</bean>
<bean id="messageSource" class="com.xxx.redca.hub.common.context.support.DatabaseDrivenMessageSource">
<constructor-arg index="0" ref="com.xxx.redca.hub.admin.module.messagemgn.service.MessageService" />
<constructor-arg index="1" ref="com.xxx.redca.hub.admin.language.service.LanguageMgnService" />
<constructor-arg index="2" value="#{comProps['defaultLang']}" />
</bean>
更新 3
我的 pom.xml
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<java.version>1.7</java.version>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<spring.version>4.1.6.RELEASE</spring.version>
<spring.security.version>3.2.3.RELEASE</spring.security.version>
<jacoco.version>0.7.2.201409121644</jacoco.version>
<jacoco.reportPath>${project.build.directory}/coverage-reports/jacoco-ut.exec</jacoco.reportPath>
<system.score.path>${project.basedir}/lib</system.score.path>
<querydsl.version>4.0.1</querydsl.version>
<java.version>1.7</java.version>
<java.home>C:/Program Files/Java/jdk1.7.0_51</java.home>
<!-- <java.home>C:/Program Files/Java/jdk1.8.0_40</java.home> -->
<!-- <datasource.type>h2</datasource.type> -->
</properties>
<dependencies>
<!-- <dependency> <groupId>org.slf4j</groupId> <artifactId>slf4j-api</artifactId>
<version>1.7.7</version> </dependency> -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
<!-- <exclusions>
<exclusion>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-tomcat</artifactId>
</exclusion>
</exclusions> -->
</dependency>
<!-- <dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-jetty</artifactId>
</dependency> -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-security</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.security.oauth</groupId>
<artifactId>spring-security-oauth2</artifactId>
<version>2.0.3.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<!-- <dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</artifactId>
</dependency>
-->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-rest</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<!-- <dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-core</artifactId>
<version>4.3.1.Final</version>
</dependency> -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.34</version>
</dependency>
<dependency>
<groupId>org.springframework.security</groupId>
<artifactId>spring-security-data</artifactId>
<version>4.0.2.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework.security</groupId>
<artifactId>spring-security-core</artifactId>
<version>4.0.2.RELEASE</version>
</dependency>
<!-- for aui -->
<dependency>
<groupId>com.anyframe</groupId>
<artifactId>anyframe-ui-spring</artifactId>
<version>1.0.4</version>
</dependency>
<dependency>
<groupId>com.googlecode.ehcache-spring-annotations</groupId>
<artifactId>ehcache-spring-annotations</artifactId>
<version>1.2.0</version>
</dependency>
<dependency>
<groupId>lego.core</groupId>
<artifactId>lego-core</artifactId>
<version>0.0.1-SNAPSHOT</version>
<scope>system</scope>
<systemPath>${system.score.path}/lego-core-0.0.1-SNAPSHOT.jar</systemPath>
</dependency>
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi</artifactId>
<version>3.12-beta1</version>
</dependency>
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi-ooxml</artifactId>
<version>3.12-beta1</version>
</dependency>
<dependency>
<groupId>org.anyframe</groupId>
<artifactId>anyframe-core</artifactId>
<version>1.6.0</version>
</dependency>
<dependency>
<groupId>org.springframework.security</groupId>
<artifactId>spring-security-core</artifactId>
<version>${spring.security.version}</version>
</dependency>
<dependency>
<groupId>org.springframework.security</groupId>
<artifactId>spring-security-web</artifactId>
<version>${spring.security.version}</version>
</dependency>
<dependency>
<groupId>org.springframework.security</groupId>
<artifactId>spring-security-taglibs</artifactId>
<version>${spring.security.version}</version>
</dependency>
<dependency>
<groupId>org.springframework.security</groupId>
<artifactId>spring-security-config</artifactId>
<version>${spring.security.version}</version>
</dependency>
<!-- mysinge api -->
<dependency>
<groupId>org.apache.axis</groupId>
<artifactId>axis-mysingle</artifactId>
<version>1.0.0</version>
<scope>system</scope>
<systemPath>${system.score.path}/axis-mysingle-1.0.0.jar</systemPath>
</dependency>
<dependency>
<groupId>commons-discovery</groupId>
<artifactId>commons-discovery-mysingle</artifactId>
<version>1.0.0</version>
<scope>system</scope>
<systemPath>${system.score.path}/commons-discovery-mysingle-1.0.0.jar</systemPath>
</dependency>
<dependency>
<groupId>ESBMailService</groupId>
<artifactId>ESBMailService</artifactId>
<version>1.0.0</version>
<scope>system</scope>
<systemPath>${system.score.path}/ESBMailService.jar</systemPath>
</dependency>
<dependency>
<groupId>ESBService_EMP_ORG_MAIL</groupId>
<artifactId>ESBService_EMP_ORG_MAIL.jar</artifactId>
<version>1.0.0</version>
<scope>system</scope>
<systemPath>${system.score.path}/ESBService_EMP_ORG_MAIL.jar</systemPath>
</dependency>
<dependency>
<groupId>javax.xml</groupId>
<artifactId>jaxrpc-mysingle</artifactId>
<version>1.0.0</version>
<scope>system</scope>
<systemPath>${system.score.path}/jaxrpc-mysingle-1.0.0.jar</systemPath>
</dependency>
<dependency>
<groupId>javax.mail</groupId>
<artifactId>mail</artifactId>
<version>1.0.0</version>
<scope>system</scope>
<systemPath>${system.score.path}/mail-1.0.0.jar</systemPath>
</dependency>
<dependency>
<groupId>javax.xml.soap</groupId>
<artifactId>saaj-mysingle</artifactId>
<version>1.0.0</version>
<scope>system</scope>
<systemPath>${system.score.path}/saaj-mysingle-1.0.0.jar</systemPath>
</dependency>
<dependency>
<groupId>wsdl4j</groupId>
<artifactId>wsdl4j-mysingle</artifactId>
<version>1.0.0</version>
<scope>system</scope>
<systemPath>${system.score.path}/wsdl4j-mysingle-1.0.0.jar</systemPath>
</dependency>
<dependency>
<groupId>commons-lang</groupId>
<artifactId>commons-lang</artifactId>
<version>2.6</version>
</dependency>
<dependency>
<groupId>bouncycastle</groupId>
<artifactId>bouncycastle-jce-jdk13</artifactId>
<version>112</version>
</dependency>
<dependency>
<groupId>commons-fileupload</groupId>
<artifactId>commons-fileupload</artifactId>
<version>1.3</version>
</dependency>
<dependency>
<groupId>commons-io</groupId>
<artifactId>commons-io</artifactId>
<version>2.4</version>
</dependency>
<dependency>
<groupId>aui-fileuploader</groupId>
<artifactId>aui-fileuploader</artifactId>
<version>1.0.0</version>
</dependency>
<dependency>
<groupId>org.scala-lang</groupId>
<artifactId>scala-library</artifactId>
<version>2.10.4</version>
</dependency>
<dependency>
<groupId>org.scala-lang</groupId>
<artifactId>scala-library</artifactId>
<version>2.10.4</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>${spring.version}</version>
</dependency>
<!-- mybatis -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.2.2</version>
</dependency>
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>1.2.1</version>
</dependency>
<dependency>
<groupId>org.apache.ibatis</groupId>
<artifactId>ibatis-sqlmap</artifactId>
<version>2.3.4.726</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context-support</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>com.googlecode.ehcache-spring-annotations</groupId>
<artifactId>ehcache-spring-annotations</artifactId>
<version>1.2.0</version>
</dependency>
<dependency>
<groupId>com.jolbox</groupId>
<artifactId>bonecp</artifactId>
<version>0.8.0.RELEASE</version>
</dependency>
<dependency>
<groupId>com.google.guava</groupId>
<artifactId>guava</artifactId>
<version>18.0</version>
</dependency>
<dependency>
<groupId>com.querydsl</groupId>
<artifactId>querydsl-apt</artifactId>
<version>${querydsl.version}</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>com.querydsl</groupId>
<artifactId>querydsl-jpa</artifactId>
<version>${querydsl.version}</version>
</dependency>
<dependency>
<groupId>com.querydsl</groupId>
<artifactId>querydsl-sql</artifactId>
<version>${querydsl.version}</version>
</dependency>
<dependency>
<groupId>net.wimpi</groupId>
<artifactId>telnetd-x</artifactId>
<version>2.1.1</version>
</dependency>
<dependency>
<groupId>org.neo4j</groupId>
<artifactId>neo4j-cypher-compiler-2.1</artifactId>
<version>2.1.5</version>
</dependency>
<dependency>
<groupId>org.apache.activemq</groupId>
<artifactId>activemq-client</artifactId>
</dependency>
<dependency>
<groupId>xalan</groupId>
<artifactId>xalan</artifactId>
<version>2.7.1</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
</dependency>
<dependency>
<groupId>org.apache.tomcat.embed</groupId>
<artifactId>tomcat-embed-jasper</artifactId>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-tomcat</artifactId>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</artifactId>
</dependency>
<dependency>
<groupId>cglib</groupId>
<artifactId>cglib</artifactId>
<version>2.2.2</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>1.7</source>
<target>1.7</target>
<encoding>UTF-8</encoding>
</configuration>
</plugin>
<plugin>
<groupId>com.mysema.maven</groupId>
<artifactId>apt-maven-plugin</artifactId>
<version>1.1.3</version>
<executions>
<execution>
<goals>
<goal>process</goal>
</goals>
<configuration>
<outputDirectory>target/generated-sources/</outputDirectory>
<processor>com.querydsl.apt.jpa.JPAAnnotationProcessor</processor>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>
更新 4
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'com.xxx.redca.hub.admin.language.dao.LanguageMgnDao': Injection of persistence dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory': Post-processing of FactoryBean's singleton object failed; nested exception is java.lang.IllegalStateException: ApplicationEventMulticaster not initialized - call 'refresh' before multicasting events via the context: org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@6f2735cc: startup date [Thu Sep 17 17:53:23 KST 2015]; root of context hierarchy
at org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor.postProcessPropertyValues(PersistenceAnnotationBeanPostProcessor.java:357)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1210)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:537)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:476)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:303)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:299)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.findAutowireCandidates(DefaultListableBeanFactory.java:1120)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1044)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:942)
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:533)
... 42 more
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory': Post-processing of FactoryBean's singleton object failed; nested exception is java.lang.IllegalStateException: ApplicationEventMulticaster not initialized - call 'refresh' before multicasting events via the context: org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@6f2735cc: startup date [Thu Sep 17 17:53:23 KST 2015]; root of context hierarchy
at org.springframework.beans.factory.support.FactoryBeanRegistrySupport.getObjectFromFactoryBean(FactoryBeanRegistrySupport.java:116)
at org.springframework.beans.factory.support.AbstractBeanFactory.getObjectForBeanInstance(AbstractBeanFactory.java:1517)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:314)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194)
at org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor.findDefaultEntityManagerFactory(PersistenceAnnotationBeanPostProcessor.java:565)
at org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor.findEntityManagerFactory(PersistenceAnnotationBeanPostProcessor.java:531)
at org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor$PersistenceElement.resolveEntityManager(PersistenceAnnotationBeanPostProcessor.java:697)
at org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor$PersistenceElement.getResourceToInject(PersistenceAnnotationBeanPostProcessor.java:670)
at org.springframework.beans.factory.annotation.InjectionMetadata$InjectedElement.inject(InjectionMetadata.java:169)
at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:88)
at org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor.postProcessPropertyValues(PersistenceAnnotationBeanPostProcessor.java:354)
... 53 more
Caused by: java.lang.IllegalStateException: ApplicationEventMulticaster not initialized - call 'refresh' before multicasting events via the context: org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@6f2735cc: startup date [Thu Sep 17 17:53:23 KST 2015]; root of context hierarchy
at org.springframework.context.support.AbstractApplicationContext.getApplicationEventMulticaster(AbstractApplicationContext.java:344)
at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:331)
at org.springframework.boot.autoconfigure.orm.jpa.DataSourceInitializedPublisher.postProcessAfterInitialization(DataSourceInitializedPublisher.java:69)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsAfterInitialization(AbstractAutowireCapableBeanFactory.java:422)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.postProcessObjectFromFactoryBean(AbstractAutowireCapableBeanFactory.java:1719)
at org.springframework.beans.factory.support.FactoryBeanRegistrySupport.getObjectFromFactoryBean(FactoryBeanRegistrySupport.java:113)
... 63 more
班级
@Repository("com.xxx.redca.hub.admin.language.dao.LanguageMgnDao")
public class LanguageMgnDaoImpl implements LanguageMgnDao{
@Autowired
private LegoSqlTemplate sqlTemplate;
@Autowired
private SequenceIdGenerator generator;
private final static String sqlStatement="LanguageMgn.";
// jpa repo
@PersistenceContext
private EntityManager em;
//@Autowired
//EntityManagerFactory emf;
JPAQueryFactory queryFactory;
@PostConstruct
void init() {
//System.out.println("=============================>>>>LanguageMgnDaoImpl "+em);
//System.out.println("=============================>>>>LanguageMgnDaoImpl "+emf);
//em = emf.createEntityManager();
queryFactory = new JPAQueryFactory(em);
推荐答案
您可以尝试将 MessageSource 包装在一个惰性代理中，这会延迟 bean 的创建，直到它被实际使用.
You could try wrapping your MessageSource in a lazy proxy, which delays the creation of the bean until it is actually used.
<bean id="messageSource" class="org.springframework.aop.framework.ProxyFactoryBean">
<property name="targetSource">
<bean class="org.springframework.aop.target.LazyInitTargetSource">
<property name="targetClass" value="com.xxx.redca.hub.common.context.support.DatabaseDrivenMessageSource" />
<property name="targetBeanName" value="lazyMessageSource"/>
</bean>
</property>
</bean>
<bean id="lazyMessageSource" class="com.xxx.redca.hub.common.context.support.DatabaseDrivenMessageSource" lazy-init="true">
<constructor-arg index="0" ref="com.xxx.redca.hub.admin.module.messagemgn.service.MessageService" />
<constructor-arg index="1" ref="com.xxx.redca.hub.admin.language.service.LanguageMgnService" />
<constructor-arg index="2" value="#{comProps['defaultLang']}" />
</bean>
现在在启动时你会得到代理，一旦它被用来检索消息，它就会被实际实例化和使用.这应该足够延迟了.
Now at startup you get the proxy and as soon it is used to retrieve messages it will be actually instantiated and used. This should delay it enough.
这篇关于使用 spring boot 配置 JPA 不起作用的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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